869edd8e6a
A malicious user could create a file named /tmp/.diskless and cause the script to misbehave. PR: conf/141258 Reported by: Jon Passki MFC after: 1 week
68 lines
2.1 KiB
Bash
Executable File
68 lines
2.1 KiB
Bash
Executable File
#!/bin/sh
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#
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# Copyright (c) 1999 Matt Dillon
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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# SUCH DAMAGE.
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#
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# $FreeBSD$
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#
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# PROVIDE: tmp
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# REQUIRE: mountcritremote
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. /etc/rc.subr
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name="tmp"
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stop_cmd=':'
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load_rc_config $name
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# If we do not have a writable /tmp, create a memory
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# filesystem for /tmp. If /tmp is a symlink (e.g. to /var/tmp,
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# then it should already be writable).
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#
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case "${tmpmfs}" in
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[Yy][Ee][Ss])
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if ! /bin/df /tmp | grep -q "^/dev/md[0-9]"; then
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mount_md ${tmpsize} /tmp "${tmpmfs_flags}"
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chmod 01777 /tmp
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fi
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;;
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[Nn][Oo])
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;;
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*)
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if _tmpdir=$(mktemp -d -q /tmp/.diskless.XXXXXX); then
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rmdir ${_tmpdir}
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else
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if [ -h /tmp ]; then
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echo "*** /tmp is a symlink to a non-writable area!"
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echo "dropping into shell, ^D to continue anyway."
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/bin/sh
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else
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mount_md ${tmpsize} /tmp "${tmpmfs_flags}"
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chmod 01777 /tmp
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fi
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fi
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;;
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esac
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